thats odd beacause almost ALL of my beans are growing a second stem maybe over 75% it must be genetics or something.

only my bean plant in self watering container with great soil is growing a 3rd stem sofar so thats 3 plants from a single seed.

I starte all my seeds in little cups then transplanted so i know 100% i put one seed per cup. I read that pole beans dont like being transplanted but i have a 100% success rate sofar they really dont seem to mind when they are 3-4 inches tall. i wouldn't dare try after they get their roots in deep.

some of my bean plants started two stems from the seed rigth away growing both stems at the same speed.